CN111457803A - Underground space model circulating blasting test pre-buried blast hole and manufacturing method - Google Patents
Underground space model circulating blasting test pre-buried blast hole and manufacturing method Download PDFInfo
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- CN111457803A CN111457803A CN202010424944.7A CN202010424944A CN111457803A CN 111457803 A CN111457803 A CN 111457803A CN 202010424944 A CN202010424944 A CN 202010424944A CN 111457803 A CN111457803 A CN 111457803A
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- Prior art keywords
- blast hole
- blasting
- underground space
- space model
- cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
Abstract
The invention provides an underground space model circulating blasting test embedded blast hole and a manufacturing method thereof, wherein the embedded blast hole specifically comprises a cylindrical blast hole and a plurality of wing plates which are symmetrically arranged along the radial center of the cylindrical blast hole and fixedly connected with the outer edge of the cylindrical blast hole; the cylindrical blast hole is positioned in the sealing aluminum plate along the projection of the vertical direction; the gun hole pre-buried blasting device is characterized by further comprising thin adhesive tape paper arranged at the opening at the top of the pre-buried blasting hole. By applying the technical scheme, the test error can be reduced.
Description
Technical Field
The invention relates to the technical field of underground space model blasting tests, in particular to an underground space model circulating blasting test pre-buried blast hole and a manufacturing method thereof.
Background
And performing a blasting mechanics model test through an underground space model test, wherein the cyclic blasting test is to simulate the cyclic blasting test by adopting a non-explosive cartridge device in a tunnel face blasting hole so as to discuss the influence of the cyclic blasting on an underground tunnel and the like.
The existing circulating blasting test has the defects that:
(1) the blasting test is easy to cause the tunnel face to collapse and the existing excavated blast holes to collapse under the protection of the pre-buried blast holes, so that the circulating blasting times are less, and a series of influences of factors such as blasting seismic waves and the like on surrounding rocks cannot be obtained in the test.
(2) Draw the big gun hole as exploding the chamber by hand, along with blasting test's going on, explode the chamber and constantly enlarge and lead to exploding the space constantly increase between chamber and the explosive, the big gun hole size changes, needs to draw the big gun hole by hand many times, and troublesome poeration leads to the position of source of explosion and pre-buried sensor to change, has great experimental error.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an underground space model circulating blasting test embedded blast hole and a manufacturing method thereof, which are beneficial to reducing the measurement error of an underground model test and greatly saving the operation time of the blasting test.
In order to solve the technical problem, the invention provides an embedded blast hole for a cyclic blasting test of an underground space model, which specifically comprises a cylindrical blast hole and a plurality of wing plates, wherein the wing plates are symmetrically arranged along the radial center of the cylindrical blast hole and are fixedly connected with the outer edge of the cylindrical blast hole; the cylindrical blast hole is positioned in the sealing aluminum plate along the projection of the vertical direction; the gun hole pre-buried blasting device is characterized by further comprising thin adhesive tape paper arranged at the opening at the top of the pre-buried blasting hole.
In a preferred embodiment, the wings are spaced 120 ° apart.
In a preferred embodiment, the sealing aluminum plate is a square sealing aluminum plate with a thickness of 0.5 mm.
In a preferred embodiment, the cylindrical blastholes are formed by welding thin aluminium plates 0.2mm thick.
In a preferred embodiment, the thickness of the wing plate is 0.5 mm.
In a preferred embodiment, the wing is a rectangular wing.
The invention also provides a method for manufacturing the embedded blast hole of the underground space model in the circulating blasting test, which comprises the following steps:
(1) selecting a thin aluminum plate for welding the blast hole into a cylindrical blast hole;
(2) welding a sealing aluminum plate at the bottom of the cylindrical blast hole;
(3) three wing plates are welded at the outer edge of the cylindrical blast hole at intervals of 120 degrees;
(4) blast hole installation and use steps: accurately positioning the position of a blast hole in the model body, embedding the blast hole and a wing plate in a rock mass, and plugging the opening side of the blast hole by using thin adhesive tape paper to prevent materials from being poured into the blast hole in the pouring process;
before using the blast hole, the adhesive tape at the opening side of the blast hole is poked to be broken, and a non-explosive cartridge device is inserted for blasting.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the invention provides an underground space model circulating blasting test pre-buried blast hole and a manufacturing method thereof.A wing plate extending outwards and a square sealing aluminum plate are embedded into a model, so that the blast hole is ensured not to deviate in the process of model pouring and blasting; and plugging two sides of the blast hole in advance in the pouring process to prevent materials from being poured into the blast hole in the pouring process. The wall thickness of the pre-buried blast hole is thin, the explosion energy is hardly attenuated, and the explosion test effect of surrounding rocks near the tunnel face is ensured. The blast hole can be recycled in the process of the cyclic blasting test, and the method is convenient to operate, safe and reliable. The size of the blast hole is guaranteed to be unchanged, the gap between the non-explosive cartridge device and the embedded blast hole is kept unchanged, the distance between the explosion source and the embedded sensor is fixed, and the measurement error of a model test is reduced.
Drawings
FIG. 1 is a front view of an underground space model circulating blasting test pre-buried blast hole in the preferred embodiment of the invention;
fig. 2 is a top view of the pre-buried blast holes of the underground space model cyclic blasting test in the preferred embodiment of the invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Referring to fig. 1 to 2, the embedded blast hole for the underground space model cyclic blasting test specifically comprises a cylindrical blast hole 1 and a plurality of wing plates 2 which are symmetrically arranged along the radial center of the cylindrical blast hole 1 and fixedly connected with the outer edge of the cylindrical blast hole 1; the cylindrical blast hole is characterized by further comprising a sealing aluminum plate 3 arranged at the bottom of the embedded blast hole, and the projection of the cylindrical blast hole 1 along the vertical direction is positioned in the sealing aluminum plate 3; the gun hole pre-buried blasting device is characterized by further comprising thin adhesive tape paper arranged at the opening at the top of the pre-buried blasting hole. Specifically, the wing plates 2 are provided in 3 numbers, that is, the wing plates 2 are arranged at an interval of 120 °. In the present embodiment, the sealing aluminum plate 3 is specifically a square sealing aluminum plate 3 with a thickness of 0.5 mm. The cylindrical blast hole 1 is formed by welding thin aluminum plates with the thickness of 0.2 mm. The thickness of the wing plate 2 is 0.5 mm.
A method for manufacturing an embedded blast hole of an underground space model circulating blasting test comprises the following steps:
(1) selecting a thin aluminum plate with the thickness of 0.2mm for the blast hole, and welding the thin aluminum plate into a cylindrical blast hole 1 with the diameter of 2.0cm and the height of 10 cm; the size can be adjusted according to the specific requirements of the test; the wall thickness of the embedded blast hole is thin, so that the explosion energy is hardly attenuated, and the explosion test effect of surrounding rock near the tunnel face is ensured;
(2) three wing plates 2 with the thickness of 0.5mm are welded at the outer edge of the cylindrical blast hole 1 at intervals of 120 degrees, the wing plates 2 are rectangular, the length of the wing plates 2 is the same as 8cm, and the width of the wing plates 2 is 5 cm. The wing plate 2 is embedded into the model to ensure that the blast hole is not transversely deviated and damaged in the process of model pouring and blasting test; a square sealing aluminum plate 3 with the thickness of 0.5mm is welded at the bottom hole of the blast hole, and the side length of the aluminum plate is 4 cm; the sealing aluminum plate 3 is embedded into the model to ensure that the blast hole is not vertically deviated and damaged in the process of model pouring and blasting test;
(3) blast hole installation and use steps: accurately positioning the position of a blast hole in the model body, embedding the blast hole and a wing plate 2 in a rock mass, and plugging the opening side of the blast hole by using thin adhesive tape paper to prevent materials from being poured into the blast hole in the pouring process; before using the blast hole, the adhesive tape at the opening side of the blast hole is poked to be broken, and a non-explosive cartridge device is inserted for blasting.
The invention provides an underground space model circulating blasting test pre-buried blast hole and a manufacturing method thereof.A projecting wing plate 2 and a square sealing aluminum plate 3 are embedded into a model, so that the blast hole is ensured not to deviate in the process of model pouring and blasting; and plugging two sides of the blast hole in advance in the pouring process to prevent materials from being poured into the blast hole in the pouring process. The wall thickness of the pre-buried blast hole is thin, the explosion energy is hardly attenuated, and the explosion test effect of surrounding rocks near the tunnel face is ensured. The blast hole can be recycled in the process of the cyclic blasting test, and the method is convenient to operate, safe and reliable. The size of the blast hole is guaranteed to be unchanged, the gap between the non-explosive cartridge device and the embedded blast hole is kept unchanged, the distance between the explosion source and the embedded sensor is fixed, and the measurement error of a model test is reduced.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (7)
1. The underground space model cyclic blasting test embedded blast hole is characterized by specifically comprising a cylindrical blast hole and a plurality of wing plates which are symmetrically arranged along the radial center of the cylindrical blast hole and fixedly connected with the outer edge of the cylindrical blast hole; the cylindrical blast hole is positioned in the sealing aluminum plate along the projection of the vertical direction; the gun hole pre-buried blasting device is characterized by further comprising thin adhesive tape paper arranged at the opening at the top of the pre-buried blasting hole.
2. The underground space model circulation blasting test embedded blast hole according to claim 1, wherein the wing plates are arranged at an interval of 120 degrees.
3. The underground space model circulation blasting test embedded blast hole according to claim 1, wherein the sealing aluminum plate is a square sealing aluminum plate with a thickness of 0.5 mm.
4. The underground space model cyclic blasting test embedded blast hole according to claim 1, wherein the cylindrical blast hole is formed by welding thin aluminum plates with the thickness of 0.2 mm.
5. The underground space model circulation blasting test embedded blast hole according to claim 1, wherein the thickness of the wing plate is 0.5 mm.
6. The underground space model circulation blasting test embedded blast hole according to claim 1, wherein the wing plate is a rectangular wing plate.
7. A method for manufacturing an embedded blast hole for a circulating blasting test of an underground space model is characterized in that the embedded blast hole for the circulating blasting test of the underground space model in any one of claims 1 to 6 is adopted, and the method comprises the following steps:
(1) selecting a thin aluminum plate for welding the blast hole into a cylindrical blast hole;
(2) welding a sealing aluminum plate at the bottom of the cylindrical blast hole;
(3) three wing plates are welded at the outer edge of the cylindrical blast hole at intervals of 120 degrees;
(4) blast hole installation and use steps: accurately positioning the position of a blast hole in the model body, embedding the blast hole and a wing plate in a rock mass, and plugging the opening side of the blast hole by using thin adhesive tape paper to prevent materials from being poured into the blast hole in the pouring process;
before using the blast hole, the adhesive tape at the opening side of the blast hole is poked to be broken, and a non-explosive cartridge device is inserted for blasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424944.7A CN111457803A (en) | 2020-05-19 | 2020-05-19 | Underground space model circulating blasting test pre-buried blast hole and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010424944.7A CN111457803A (en) | 2020-05-19 | 2020-05-19 | Underground space model circulating blasting test pre-buried blast hole and manufacturing method |
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| CN111457803A true CN111457803A (en) | 2020-07-28 |
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Citations (10)
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|---|---|---|---|---|
| CN202938853U (en) * | 2012-12-14 | 2013-05-15 | 山东科技大学 | Coal mining area tunnel simulation blasting experiment apparatus |
| CN202939169U (en) * | 2012-12-14 | 2013-05-15 | 山东科技大学 | Blasting experiment device used in soft rock roadway |
| CN203924353U (en) * | 2014-07-15 | 2014-11-05 | 林明 | Screw built-in fitting |
| CN104964623A (en) * | 2015-07-01 | 2015-10-07 | 叶建军 | Large-area or large-volume concrete pre-buried blast hole arrangement method and blasting demolition method |
| CN204944727U (en) * | 2015-08-06 | 2016-01-06 | 福建省民爆化工股份有限公司 | The quick-fried power simple detection device of explosive |
| CN105587119A (en) * | 2016-01-29 | 2016-05-18 | 武汉爆破有限公司 | Cast-in-place concrete pre-buried hole forming device and cast-in-place concrete pre-buried shot hole forming method thereof |
| US20160216247A1 (en) * | 2014-04-30 | 2016-07-28 | Hohai University | Transparent frozen soil and preparation method and application thereof |
| CN206818694U (en) * | 2017-05-17 | 2017-12-29 | 马鞍山江南化工有限责任公司 | A kind of mould of the test without cap-sensitivity explosive brisance |
| CN209877792U (en) * | 2019-03-20 | 2019-12-31 | 天津致远爆破工程有限公司 | Pre-buried big gun hole structure |
| CN212227893U (en) * | 2020-05-19 | 2020-12-25 | 华侨大学 | Embedded blast hole for underground space model circulating blasting test |
-
2020
- 2020-05-19 CN CN202010424944.7A patent/CN111457803A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202938853U (en) * | 2012-12-14 | 2013-05-15 | 山东科技大学 | Coal mining area tunnel simulation blasting experiment apparatus |
| CN202939169U (en) * | 2012-12-14 | 2013-05-15 | 山东科技大学 | Blasting experiment device used in soft rock roadway |
| US20160216247A1 (en) * | 2014-04-30 | 2016-07-28 | Hohai University | Transparent frozen soil and preparation method and application thereof |
| CN203924353U (en) * | 2014-07-15 | 2014-11-05 | 林明 | Screw built-in fitting |
| CN104964623A (en) * | 2015-07-01 | 2015-10-07 | 叶建军 | Large-area or large-volume concrete pre-buried blast hole arrangement method and blasting demolition method |
| CN204944727U (en) * | 2015-08-06 | 2016-01-06 | 福建省民爆化工股份有限公司 | The quick-fried power simple detection device of explosive |
| CN105587119A (en) * | 2016-01-29 | 2016-05-18 | 武汉爆破有限公司 | Cast-in-place concrete pre-buried hole forming device and cast-in-place concrete pre-buried shot hole forming method thereof |
| CN206818694U (en) * | 2017-05-17 | 2017-12-29 | 马鞍山江南化工有限责任公司 | A kind of mould of the test without cap-sensitivity explosive brisance |
| CN209877792U (en) * | 2019-03-20 | 2019-12-31 | 天津致远爆破工程有限公司 | Pre-buried big gun hole structure |
| CN212227893U (en) * | 2020-05-19 | 2020-12-25 | 华侨大学 | Embedded blast hole for underground space model circulating blasting test |
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